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Finding the Fourth Proportional to 102,887.80, 154,331.70 and 91,734.10

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Solution

The fourth proportional to 102,887.80, 154,331.70 and 91,734.10 is: 137,601.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,887.80 : 154,331.70 = 91,734.10 : x
  2. Step 2: Convert to fraction form
    102,887.80/154,331.70 = 91,734.10/x
  3. Step 3: Cross multiply
    102,887.80x = 154,331.70 × 91,734.10
  4. Step 4: Simplify right side
    102,887.80x = 14,157,479,600.97
  5. Step 5: Solve for x
    x = 14,157,479,600.97/102,887.80
  6. Step 6: Final answer
    x = 137,601.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.